3v4l.org

run code in 300+ PHP versions simultaneously
<?php function test($a) { var_dump(fwrite($a, 'ABCDEFGHIJKLMNOPQRSTUVWXYZ')); var_dump(fseek($a, 0, SEEK_SET)); var_dump(fwrite($a, '1234567890')); var_dump(fseek($a, 0, SEEK_SET)); var_dump(fread($a, 40)); } $a = fopen('php://temp', 'w+'); test($a); echo '-------------------' . PHP_EOL; $a = fopen(tempnam("/tmp", "hello"), 'w+'); test($a);
Output for 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.19, 8.3.0 - 8.3.7
int(26) int(0) int(10) int(0) string(26) "1234567890KLMNOPQRSTUVWXYZ" ------------------- int(26) int(0) int(10) int(0) string(26) "1234567890KLMNOPQRSTUVWXYZ"
preferences:
211.62 ms | 404 KiB | 293 Q